Chemical identity

Budesonide EP Impurity H

CAS 313474-58-7 · C25H32O5

01Identity

Identifiers and names for this exact compound. Empty fields are left unassigned.

Lazychem IDLC-08868
PubChem CID15391895
NameBudesonide EP Impurity H
CAS RN313474-58-7
Molecular formulaC25H32O5
Molecular weight412.52 g/mol
IUPAC name16α,17-[(1RS)-Butylidenebis(oxy)]-21-hydroxypregna-1,4,9(11)-triene-3,20-dione
InChIKeyBGHUSGMMTUEBEE-RHFXYJBUSA-N

02Structure identifiers

2D structurePubChem CID 15391895
Two-dimensional chemical structure of Budesonide EP Impurity H, CAS 313474-58-7
Two-dimensional structure for the PubChem identity linked to this record. Confirm the identifiers before analytical use.

The parsed structure contains 5 rings, includes aliphatic carbon, has 6 defined stereocentres. These statements are calculated from the published structure string.

Defined stereocentres6
Unassigned stereocentres1
Ring count5
Secondary amines0
Tertiary amines0
N-methyl amine sites0
SMILESCCCC1O[C@@H]2C[C@H]3[C@@H]4CCC5=CC(=O)C=C[C@@]5(C4=CC[C@@]3([C@@]2(O1)C(=O)CO)C)C
InChINot listed
Formula from structureC25H32O5
Molecular weight from structure412.52 g/mol

03Stereochemistry

The published structure contains 6 defined and 1 unassigned tetrahedral stereocentres. The exact wedge and dash depiction is shown above.

Defined centres6Structure assigned
Unassigned centres1Structure unspecified
Assignment statusPartially assignedExact published identity
Tetrahedral upper bound≤ 128Before symmetry reduction

Published same-connectivity configurations

1 record

These records have the same connectivity, molecular formula and protonation layer, but a different complete InChIKey stereochemical layer. Only separately structure-linked records are shown.

No additional structure-linked configuration with the same connectivity is currently present in the LazyChem dataset.

Scope: The mathematical 2^n value is only an upper bound. Symmetry and other stereogenic elements can change the number of distinct stereoisomers. A hypothetical configuration is not published as a compound record without a verified structure identity.

04India status for this compound

These results apply only to this exact compound name and CAS number. Confirm the current official instruments before making a regulatory decision.

NDPS / RCSNO EXACT MATCH FOUNDCAS 313474-58-7 has no exact match in the reviewed published schedule.
SCOMETNO EXACT REVIEWED CAS MATCHCAS 313474-58-7 has no exact match in the reviewed SCOMET list.
Review date2026-08-01Recheck the current official instruments for the material, concentration, activity and date in question.

05Names and relationships

Associated parent compound

Budesonide

View API and impurity family

Other names

  • 9,11-Anhydrobudesonide
  • 313474-58-7
  • HGK3X9TC3Y
  • UNII-HGK3X9TC3Y
  • 9,11-Anhydrobudesonide(Mixture of Diastereomers)
  • Budesonide impurity H [EP]
  • (1S,2S,4R,8S,9S,13S)-8-(2-Hydroxyacetyl)-9,13-dimethyl-6-propyl-5,7-dioxapentacyclo[10.8.0.02,9.04,8.013,18]icosa-11,14,17-trien-16-one
  • 16alpha,17-((1RS)-Butylidenebis(oxy))-21-hydroxypregna1,4,9(11)-triene-3,20-dione
  • Pregna-1,4,9(11)-triene-3,20-dione, 16,17-(butylidenebis(oxy))-21-hydroxy-, (16alpha)-
  • Budesonide Imp. H (EP)
  • 16alpha,17-[(1RS)-Butylidene-bis(oxy)]-21-hydroxypregna-1,4-diene-3,20-dione
  • (16alpha)-16,17-[Butylidenebis(oxy)]-21-hydroxy-pregna-1,4,9(11)-triene-3,20-dione

Related records from the same parent family

06Documented history

Dated discovery, occurrence, use and issue claims are published only when a suitable primary or government source is available.

No dated history available

No verified discovery, first report, occurrence, use or issue event is currently available for this identity.

07Sources